Regularizing the tension of threads in spinning



July 3, 1956 P. DE HALLEUX 2,752,749

REGULARIZING THE TENSION OF' THREADS IN SPINNING Filed Sept. 2l, 1951 27 M ma REGULARIZING THE TENSION F THREADS IN SPINNING Pierre de Halleux, Woluwe Saint-Pierre, Belgium, as-

siguor, by mesne assignments, to Doutors Societe Anonyme Hoiding, Luxembourg, Grand Duchy of Luxembourg, a corporation of Grand Duchy of Luxembourg Appiication September 21, 1951, Serial No. 247,655 Claims priority, application Belgium January 30, 1951 6 Claims. (Cl. 57-9) The present invention relates to the methods and devices utilized in spinning to render uniform with a View to their regular assemblage, the speeds of pull at the point of assemblage of a number of threads, without the intervention of any motor or regulator element other than the threads themselves.

Devices are already known which tend to render uniform the speeds or the tensions of several threads. Some of these comprise a positive dragging of the threads, which necessitates a mechanical control.

ln other devices a reciprocal action of the threads is utilized with a view to equalising their tensions. This causes supplementary friction for these threads, without the results obtained being entirely satisfactory.

The object of the present invention is to eliminate these various disadvantages, and to provide a method and With this end in view the method according to the invention is characterised by the fact that the various threads pass over one or more rotary guides, which are free on their pivots, and the rotation of which is caused by the drag of the threads, the speeds of which become uniform in the manner of a plurality of belts passing over the same pulley.

Constructional examples which will enable the invention to be better understood are shown in the accompanying drawings, in which:

Figures l to 4 show diagrammaticaly devices for regulating the speeds of two or three threads, and

Figure shows the application of a device according to the invention to a reeling twister for three ends.

Figure 6 shows on a larger scale the assembling of the tension regulating device on a reeling twister for three ends.

Figure 7 shows in perspective the tension regulator shown in front view diagrammatically in Figure 6.

According to Figure l, two threads 1 and 2, with any arbitrary tensions arrive at a pulley or roller 4, around which they pass in the same direction in parallel grooves, before going to a tractive device. The two threads enter two grooves in one and the same loose pulley. Since they do not slip, they drive one another through the medium of the pulley, and necessarily leave at the same speed.

According to Figure 2, three threads 1, 2 and 3 arrive with any tensions upon a pulley 4, round which they all pass in the same direction. It will be seen that in a way analogous to that which has been described with reference to Figure l, the speeds of all the threads will be the same when they leave the pulley.

According to Figure 3, two pulleys 4 and 5 are employed for two threads 1 and 2, of any tension. The thread 1 enters by the pulley 4, and leaves by the pulley 5, while the thread 2 enters by the pulley 5 and leaves by the pulley 4. For the same reasons as before, the threads necessarily leave at the same speed.

" arent 'ice According to Figure 4, a device with two pulleys, like that of Figure 3, is utilized for regularizing the speeds of three threads. The thread 1 passes successively first over the pulley 4 and then over the pulley 5, while the threads 2 and 3 wind successively over the pulley 5 rst and then over the pulley 4. The three threads all have the same speed when they leave the pulleys.

Figure 5 shows, by way of example, an application of the method and device of Figure 4 to a reeling twister for three ends of a kind well known to the art (see U. S. Patent No. 2,703,958 to De Halleux) in which the regulating device, shown in detail in Figures 6 and 7, is driven by the threads leaving the reeling twister. By the wellknown principle of false twist, as described in U. S. Patent No. 2,703,958 to De Halleux, each thread leaving the reeling twister has the same twist as when it entered.

The reeling twister is composed of a hollow shaft 11, driven by appropriate means (not shown), mounted upon central bearings 12, and carrying at each end bobbinholder bearings 13 and 16, rotation of which is prevented by counterpoises 14 and 17.

The shaft 11 also carries revolving thread-guide bowls 15 and 18, a bobbin 19 being located outside the spindle and giving rise to a thread 19. A bobbin 20 is carried upon the stationary bearing 13 in the revolving bowl 15 and gives rise to a thread 20. A bobbin 21 is similarly carried by the stationary bearing 16 in the revolving bowl 18 and gives rise to a thread 21'.

The bobbin 21 is enclosed in a case 22 rigidly united with the stationary bearing 16, and its cover 23 carries a hollow spindle 24, serving as a bearing for a pulley supporting bracket or cage 25. This pulley support is rotated with the shaft 11 and the bowls 18 and 15 by the threads 19 and 20 by means of a thread guide 26.

The thread 19 coming from the bobbin 19 passes a tensioning device 27, and then passes a guide 28 placed in alignment with the shaft 11. It then enters the bowl 15 passing through the thread guide 29 fixed to the bowl, and leaves it at 30, to enter the shaft 11 at 31 and leave it at 32. It then enters the bowl 18 at 33 and leaves it at 34. It passes again into the thread guide 26, and then over the pulleys 4 and 5.

The thread 20 coming from the bobbin 20 passes into the tensioning device 37 before entering the shaft 11 at 3S. From the point 31 onwards its course is the same as that of the thread 19, that is to say, 31, 32, 33, 34, 26, and then over the pulleys 4 and 5.

The thread 21 issuing from the bobbin 21 passes into the tensioning device 39, then into the hollow spindle 24 of the cover 23. It then passes over the pulley v4 and finally over the pulley 5. The threads 19', 20 and 21 unite at the point 40 to form the cabled yarn 41.

Figure 6 makes it possible to better understand the manner in which cage 25 is carried along in the rotation of the cabling device.

On the substantially stationary case 22 there is applied a cover 23. In the center of this cover there is fastened a hollow shaft 24. This shaft 24 serves as support for ball bearings 42 and 43 on which the hollow shaft 44 rotates. To this hollow shaft 44 there is attached the cage 25 consisting of a simple plate which supports the axles of rotation of the pulleys 4 and 5. To this hollow shaft 44 there is likewise fastened the thread guide 26 through the ring of which the threads 19 and 20 pass. As these threads are carried along in the rotation of the bowl 1S by the guide 34, they in turn carry along in this rotation the thread guide 26, the hollow shaft 44, the cage 25 and the pulleys 4 and 5 supported by the said cage.

Figure 7 shows in perspective how the threads to be assembled are distributed over the grooved pulleys 4 and 5.

The thread 19 coming from the bobbin 19 after having passed over the thread guide 26 passes into the groove 46 of pulley 4 and then groove 46 of pulley 5 and from there to the assembly point. The thread 20 coming from the bobbin 20, after having passed over the thread guide 26, goes to the groove 47 of pulley 4 and then to groove 47 of pulley 5 from where it goes to the assembly point. The thread 21 coming from the bobbin 21 emerges from the hollow shaft 24 and extends to the groove 45' of the pulley 5. From there it passes to the groove 45 of the pulley 4 then going to the assembly point 40. The assembled or cabled threads 41 are taken up and pulled through the reeling twister and the assembling or cabling deviceby a tractive bobbin or other similar device (not shown).

Thanks to their 'passage round the pulleys 4 and 5, the three threads, the tensions of which, at the time of their reeling from the starting bobbins, were of any arbitrary magnitude, become uniform in speed, so that when they arrive at the assembly point 40 they all have the same speed. In this way a cabled yarn 41 is obtained which does not exhibit the defect of irregularity of the turns arising from a difference in the length. of the threads assembled.

I claim:

l. The method of equalizing the tension and speed of threads in spinning which comprises the steps of feeding a plurality of threads around two grooved pulleys in succession, one thread being fed to one pulley rst and other threads being fed to the other pulley first, and revolving said pulleys on their axes in opposite directions by means of said threads.

2. The method of equalizing the tension and speed of threads in spinning which comprises the steps of feeding a plurality of threads around two grooved pulleys in succession, 'disposing the threads to embrace a large portion of the circumference of each pulley, one thread being fed to one pulley i'rs't and the other threads being fed to the other pulley iirst, and revolving said pulleys in opposite directions by means of said threads.

3. The method of equalizing the tension and speed of threads in spinning which comprises the steps of feeding a plurality of threads around two grooved pulleys in succession, dispos'ing the threads to embrace a large portion of the circumference of each pulley, one thread being fed to one pulley first and the other threads being fed to the other pulley rst, revolving said pulleys in opposite directions on their respective axes by means of said threads, and rotating said pulleys about an axis substantially perpendicular to the axes of said pulleys.

4. In combination with a yreeling twister, apparatus for equalizing the tension and speed of threads comprising a shaft member mounted for rotation, a supporting member secured lto said shaft member, a thread 'guide attached to said shaft member vand connected 'to said reeling twister by threads passing from said twister through said guide whereby rotation of said reeling twister is imparted to said shaft member and said supporting member, two grooved pulleys rotatably mounted on said supporting member, the axes of said pulleys being disposed perpendicular to said supporting member, said pulleys being adapted to be revolved by a plurality of threads passing in succession around a large portion of the circumference of each pulley, one thread passing around one pulley rst and other threads passing around the other pulley first.

5 In combination with a reeling twister, apparatus for equalizing the tension and speed of threads comprising a substantially stationary case, a cover disposed over said case, a hollow shaft adapted to receive threads and iixedly secured to the center of said cover, ball bearings supported by said shaft, a second hollow shaft mounted for rotation over said ball bearings, a supporting bracket tixedly secured to said second shaft, two grooved pulleys rotatably mounted on said supporting bracket, the axes of said pulleys being disposed perpendicular to said supporting bracket, said pulleys being adapted to be revolved by a plurality of threads passing in succession around a large portion of the circumference of each pulley, one thread passing around one pulley iirst and other threads passing around the other pulley first.

6. In combination with a reeling twister, apparatus for equalizing the tension and speed of threads comprising a substantially stationary case, a cover disposed over said case, a hollow shaft adapted to receive threads and iixedly secured to the center of said cover, a second hollow shaft mounted for rotation over said first shaft, a supporting bracket iixedly secured to said second shaft, a thread guide attached to said second shaft and connected to said reeling twister by threads passing from said twister through said guide whereby rotation of said reeling twister is imparted to said second shaft and said supporting bracket, two grooved pulleys rotatably mounted on said supporting bracket, the axes of said pulleys being disposed perpendicular to said supporting bracket, said pulleys being adapted to be revolved by a plurality of threads passing from said second hollow shaft and from said thread guide around 'a large portion of the circumference of each pulley in succession, one thread passing around one pulley first and other threads passing around the other pulley iirst.

References Cited in the file of this patent UNrrED STATES PATENTS Andrew lune 5, 1934 Turcotte Y June 1, 1943 

1. THE METHOD OF EQUALIZING THE TENSION AND SPEED OF THREADS IN SPINNING WHICH COMPRISES THE STEPS OF FEEDING A PLURALITY OF THREADS AROUND TWO GROOVED PULLEYS IN SUCCESSION, ONE THREAD BEING FED TO ONE PULLEY FIRST AND OTHER THREADS BEING FED TO THE OTHER PULLEY FIRST, AND REVOLVING SAID PULLEYS ON THEIR AXES IN OPPOSITE DIRECTIONS BY MEANS OF SAID THREADS. 